The actress, who has been dating Jack Antonoff for years, was initially entertained by the athlete's efforts, replying, "Okay now you're making me laugh. I'm gonna have to read your wiki. This whole exchange is a real trip!"

But Dykstra didn't stop there. Next, he posted a video of a home run he hit in 1986. As he noted, "This is a good place to start to get the bloodflow going, doll."

The star was not amused. "Good luck with that," she tweeted back. "I just asked who you were and the answer I got was 'just a classic piece a s---!' #notallbaseballplayers."

"You guys I'm being simultaneously trolled &seduced by @LennyDykstra this day has gotten really f--king weird," Dunham continued. "You know deep down you want to take a ride on the space shuttle," he answered.

Soon, the star decided to call it a night. "Excited about my new stalker @LennyDykstra! Unfortunately he seems to have underestimated my powers. Nite baseball fans, what a wild ride," she signed off. However, Dykstra didn't quit.

"If you can't get to sleep after all this excitement, I recommend a cold shower," he answered. "I'm already asleep, grandpa," Dunham retorted. After another fan criticized the former athlete for his on-air behavior, Dunham shared her accordance. "Yeah he's fully disgusting and contemptible - and will never understand how much wittier I am."